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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

A crystal limiter for use in an FM Receiver in the presence of impulse interference

January 1947 (has links)
T.P. Cheatham. / "April 24, 1947." / Includes bibliographical references. / Army Signal Corps Contract No. W-36-039 sc-32037
32

Channel estimation and equalization for doubly-selective channels using basis expansion models

Song, Liying, Tugnait, Jitendra K., January 2008 (has links) (PDF)
Thesis (Ph. D.)--Auburn University, 2008. / Abstract. Vita. Includes bibliographical references (p. 138-144).
33

Study of fade and inter-fade durations in Ku- and Ka- band frequencies using OLYMPUS satellite beacons /

Ajaz, Haroon, January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 127-130). Also available via the Internet.
34

Frequency scaling of rain attenuation on satellite links in the Ku/Ka-bands using OLYMPUS satellite data /

Laster, Jeff D., January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaf 157). Also available via the Internet.
35

High-performance frequency-demodulation systems

Kouwenhoven, Michael Hendrikus Laurentius, January 1900 (has links)
Thesis (doctoral)--Technische Universiteit Delft, 1998. / Includes bibliographical references.
36

High-performance frequency-demodulation systems

Kouwenhoven, Michael Hendrikus Laurentius, January 1900 (has links)
Thesis (doctoral)--Technische Universiteit Delft, 1998. / Includes bibliographical references.
37

AM-FM transforms with applications /

Pattichis, Marios Stephanou, January 1998 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 241-248). Available also in a digital version from Dissertation Abstracts.
38

Design of CMOS RF low-noise amplifiers and mixer for wireless applications /

Lou, Shuzuo. January 2007 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references. Also available in electronic version.
39

Channel characterisation and coding for the FM SST channel

Albertyn, Eben 10 November 2011 (has links)
M.Ing. / The transmission of digital data at higher data rates and greater reliabilities is becoming increasingly more important in the society of today. The usage of, especially wireless digital data, is increasing at an alarming rate, and the need arises for more bandwidth to be made available for this purpose. Hence, the need arises to optimise and expand the usage of bandwidth currently under use. Existing wireless channels, such as the commercial FM service, need to be re-evaluated and unused bandwidth needs to be developed and used as close to capacity as possible. In this dissertation, a study was launched to develop the FM SST (Supplementary Signal Transmission) commercial analog service as a simplex digital channel that can commercially be used to transmit a myriad of digital data. With the help of a commercial FM radio channel, digital data was transmitted using a number of different modulation schemes to obtain channel measurements for the FM SST channel. The modulation scheme that performed the best, given certain criteria, was GMSK. This raw information was then used to extract first and higher order statistical information from the channel, in order to parameterise discrete channel models, based on a Markov process. The channel models that were used were the Gilbert, GilbertElliott and Fritchman channel models. These channel models were then tested according to their iirst and higher order statistical data to evaluate their effectiveness in modelling the error process on the FM SST channel. It was found that the channel model best approximating the real channels was the Gilbert channel. Once satisfactory results were obtained, these discrete channel models were then used to evaluate various error correction schemes for their ability to correct burst errors on the FM SST channel. From the various schemes evaluated, a (63,39) BCH with an interleaver of index 4 was found to perform the best. The purpose of which is to transmit digital data at the highest data rate possible and at the same time having a bit error rate less than lxl0-6.
40

Error Rates in Narrow-band Digital FM Systems Operating in Various Interference Environments

Rodriguez, Arthur M. 01 January 1975 (has links) (PDF)
No description available.

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